#51A6EA#51A6EA

#51A6EA is a light, vivid cyan. Relative luminance 0.350; OKLCH L 70.2% C 0.130 H 245.3°. Best body text is #000000 at 7.99:1 contrast (WCAG AA passes).

Color values

HEX#51A6EA
RGBrgb(81, 166, 234)
HSLhsl(207, 78%, 62%)
HSVhsv(207, 65%, 92%)
CMYKcmyk(65.4%, 29.1%, 0%, 8.2%)
CIE-LABlab(65.72, -4.84, -41.73)
CIE-LCHlch(65.72, 42.01, 263.38°)
OKLaboklab(70.17% -0.0541 -0.1178)
OKLCHoklch(70.17% 0.13 245.3)
XYZxyz(31.8753, 34.9590, 82.8939)
Luminance0.3496 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51A6EA #EA9551
analogous
#51EAE2 #51A6EA #515AEA
triadic
#51A6EA #EA51A6 #A6EA51
tetradic
#51A6EA #E251EA #EA9551 #5AEA51
square
#51A6EA #E251EA #EA9551 #5AEA51
split-complementary
#51A6EA #EA515A #EAE251
monochromatic
#1569AC #1B8AE2 #51A6EA #88C2F1 #BEDEF7

Accessibility & contrast

On white

2.63
#51A6EA on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.99
#51A6EA on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51A6EA
7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51A6EA#FFFFFF#000000##000000
##51A6EA1.002.637.997.99
#FFFFFF2.631.0021.0021.00
#0000007.9921.001.001.00
##0000007.9921.001.001.00

Color blindness preview

Protanopia (red-blind)
#88A8ED
Deuteranopia (green-blind)
#7399E9
Tritanopia (blue-blind)
#00B6BE
Achromatopsia (no color)
#A0A0A0

Design tokens & code

CSS
--color: #51a6ea;
/* rgb */ color: rgb(81, 166, 234);
/* oklch */ color: oklch(70.2% 0.130 245.3);
Tailwind
colors: {
  custom: {
    50: '#90c0f1',
    500: '#51a6ea',
    950: '#000000',
  },
}
SCSS
$custom: #51a6ea;
$custom-light: #90c0f1;
$custom-dark: #000000;
JSON
{
  "hex": "#51a6ea",
  "rgb": {
    "r": 81,
    "g": 166,
    "b": 234
  },
  "hsl": {
    "h": 206.667,
    "s": 78.462,
    "l": 61.765
  },
  "oklch": {
    "l": 0.70167,
    "c": 0.12962,
    "h": 245.3
  },
  "luminance": 0.34962
}

Semantic roles & 50–950 ramp

primary
#51A6EA
secondary
#E8C8AF
accent
#670BDB
background
#F9FBFE
surface
#F2F7FD
border
#CCD0D5
text
#0E1216
muted
#7E8184

Preview Lab

Preview with #51A6EA

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#51A6EA Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva